NF1 and neurofibromatosis type 1: The included NF1 samples had 20–86% females (one study included males only), 13–58% familial NF1 participants (27 studies reported the data, among which one included familial NF1 cases only and another, sporadic NF1 cases only), 8–77% diagnosed with ADHD (32 studies reported the data, among which five did not include any individuals with ADHD), and 10–71% diagnosed with ASD (12 studies reported the data, among which five did not include any individuals with ASD and two included only individuals with ASD).